public static function standard_dir($dir, $path_replace = null)
{
$dir = wp_normalize_path($dir);
if (is_string($path_replace)) {
if (!self::$abspath) {
self::$abspath = wp_normalize_path(ABSPATH);
self::$contentpath = wp_normalize_path(dirname(WP_CONTENT_DIR) . '/');
}
$dir = str_replace(array(self::$abspath, self::$contentpath), $path_replace, $dir);
}
return $dir;
}